External risk intelligence

Adobe Flash Player Remote Code Execution Vulnerability

CVE advisoryKnown Exploit

CVE-2016-1019

A vulnerability in Adobe Flash Player may allow for denial of service or arbitrary code execution. Affected organizations face risks to system stability and data integrity. Attackers could exploit this to disrupt operations or gain unauthorized access.

1Halo Surface Signal

Denial of Service

Adobe Flash Player Desktop Runtime

21.0.0.197 and earlier18.0.0.333 and earlier11.2.202.577 and earlier21.0.0.176 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2016-1019

This vulnerability affects Adobe Flash Player, a client-side browser plugin and runtime environment. It is not an internet-facing service, gateway, or management portal; rather, it is software installed on individual end-user devices for client-side execution.

Horizon Alert

Summary of the vulnerability and why it matters

Organizations using Adobe Flash Player may face risks due to a flaw that can lead to denial of service or potential arbitrary code execution. This vulnerability could impact system stability and the integrity of data processed by affected applications. Attackers could exploit this weakness to disrupt operations or gain unauthorized access.

  • Adobe Flash Player
  • Unspecified flaw allows code execution
  • System disruption and data compromise

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by delivering a specially crafted file to a user. When the user interacts with the malicious file, it can lead to the application crashing or potentially allow the attacker to execute arbitrary code. This could result in unauthorized access to or control over the affected system.

  • Exposure through specially crafted files.
  • Attacker triggers code execution.
  • System compromise or denial of service.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Adobe Flash Player could allow attackers to cause denial of service or execute arbitrary code. As it was actively exploited in the wild, organizations should consider the potential business risk.

  • Likely attacker skill level: Low.
  • Required access or conditions: Network access, no user interaction.
  • Business risk or urgency: High.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Adobe Flash Player allows remote attackers to cause a denial of service or potentially execute arbitrary code. Organizations should treat this as a critical risk due to its exploitability in the wild. The immediate focus should be on identifying all instances of the affected software within the organization's environment and taking steps to mitigate the associated risks.

  • Find all instances of the software.
  • Reduce exposure by disabling or removing it.
  • Verify the vendor fix is applied.
  • Monitor for related activity.

Frequently asked questions

What is the impact of CVE-2016-1019 on Adobe Flash Player?

CVE-2016-1019 affects Adobe Flash Player versions 21.0.0.197 and earlier, potentially allowing remote attackers to cause a denial of service or execute arbitrary code. This vulnerability was exploited in the wild in April 2016, posing a significant risk to system stability and data integrity.

How is CVE-2016-1019 exploited and what is the weakness class?

The weakness class for CVE-2016-1019 is a remote code execution vulnerability. Attackers can exploit this by delivering a specially crafted file to a user, which, upon interaction, can cause the application to crash or enable arbitrary code execution.

What is the trigger path for CVE-2016-1019, and is there scope negation?

The trigger path for CVE-2016-1019 involves delivering a malicious file to a user. Exploitation requires network access and does not necessitate user interaction to trigger the vulnerability, leading to potential system compromise or denial of service.

What is the relevance of CVE-2016-1019 based on Halo Surface Signal?

Halo classifies CVE-2016-1019 as 'Very unlikely' to be a threat. This is because Adobe Flash Player is a client-side browser plugin and runtime environment, not an internet-facing service, gateway, or management portal.

What practical steps should organizations take regarding Adobe Flash Player vulnerabilities like CVE-2016-1019?

Organizations should identify all instances of affected Adobe Flash Player, disable or remove the software to reduce exposure, and monitor for any related malicious activity. Given that Flash Player is end-of-life, disconnecting it if still in use is the recommended action.

References